Expedition 43 Crew Prepares for Launch At the Baikonur Cosmodrome in Kazakhstan, Expedition 43 Soyuz Commander Gennady Padalka with Flight Engineers Mikhail Kornienko and Scott Kelly participated in a variety of activities March 14-20 as they prepared for their launch to the International Space Station on March 27 U.S. time (March 28, Kazakh time). Kelly and Kornienko will spend a year aboard the orbital outpost.
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https://archive.org/details/Exp43Activities150320720pAuthor(s): No creator set

Laboratory techniques are available to aid in the preparation and staining of the chromosomes from a single cell, so that they are readily distinguished and can be photographed under the microscope. During mitosis, the chromosomes become visible (because they have condensed) and it is during mitosis that chromosome number, size and shape can be most easily studied. Every species has a particular number of chromosomes, each with a characteristic size and shape. For example, chimpanzee c

In this course we'll be concerned with what type of science forms the basis of science education, and for what purpose. You'll explore these issues by reading the text that follows and by tackling the activities that are included; there are also a number of readings. In the latter part of this course (Sections 10–14) we'll consider some of the practical problems involved in delivering an effective curriculum in science and look at key questions relevant to all three educational tiers

Author(s): The Open University

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We can use a similar technique to find the Euler characteristic of a 2-fold torus. If we cut the surface into two, as shown in Figure 95, and separate the pieces, we obtain two copies of a 1-fold torus with 1 hole, each with Euler characteristic −1.

For much of the rest of this unit we shall be concerned with the properties of a type of sound wave that when represented as a graph has a characteristic shape known as a sine wave. Figure 1 shows you what a sine-wave graph looks like. For the moment you need not be concerned with what this grap

To improve decision making it is first important to have a clear idea of how we should judge an effective decision. While in this course we have suggested that decisions often stray from formal rationality, this does not always mean those decisions are less effective. Sometimes it is smart to take mental shortcuts: drawing on hunches and intuition can allow us to tap our tacit knowledge and experience and can reduce the costs of decision making. It can be smart to ask what is ‘legitimate’

We have taken a brief excursion through three different perspectives on decision making (the rational-economic, the psychological and the social) and we have considered how we think about risk from these different perspectives. How can you use these ideas to improve your own and others' decision making? The first way is to use them to develop greater insight into the pressures and influences that may be affecting how you process information, think, and decide. By becoming more aware of these

Earlier in this course we referred to the way in which social groups can develop shared cognitive schema. One important role for shared cognitive schema is to define the risks that we pay attention to, the dread in which we hold them and the perceived likelihood of their occurrence. Because these perceptions affect behaviour, they also play a role in selecting the risks that we face. In the last half century, some sociologists suggest (e.g. Beck, 1992; Giddens, 1990) that our concerns with ri

Closing a project can be quite an emotional experience for team members who have worked together for some time, particularly if close bonds have developed. The manager of a project has some obligations to staff who have worked for some time on it. Build into the plan a closure interview with each member of staff, so that their contribution can be formally recognised and recorded. Staff may need help to recognise the skills and experience that they have gained and how these have been evidenced

There is so much information available on the Internet on every topic imaginable. But how do you know if it is any good? And if you find a lot more information than you really need, how do you decide what to keep and who to discard?

In this section we are going to introduce a simple checklist to help you to judge the quality of the information you find. Before we do this, spend a few minutes thinking about what is meant by information quality.

As you will see, there are many possible choices that can be made during the design and many rules to guide this work. When trying to decide if some choices are better than others, you need to consider the key desirable properties of a database. The table here outlines some of them:

Completeness

Ensures that users can access the data they want. NAuthor(s): The Open University

This section examined how computers can be used to control machines. It used the household washing machine as a case study and explored how the microcomputer contained in such a machine is programmed to:

provide an interface for the user to operate the machine;

control the way the machine carries out the operations chosen by the user.

The washing machine case study also illustrated the necessity of building safety feature

Another way to tackle unfamiliar words is to start a ‘concept card’ system, using index cards. When you meet a word which seems important, take a new card and write the word at the top, followed by any useful information you have found. File the cards alphabetically and add details as you come across new information. (It is worth getting an index card box anyway, then you can try out various ways of using it to organise your studies.)

There may be many users of a single computer in your house, and each person is a different shape and size. This means that a single layout of the work area may not meet the needs of all of the users. If you have an adjustable chair or desk, it is sensible for each user to adjust it to fit them when they come to use the computer. You may find it helpful to mark the chair or desk to show the most comfortable settings for each person.